Read my post above. It's possible to have better battery life than ever with 2.2. I know I am.
You don't need to have data turned on at all times with your phone service. And when you kick mobile data to 'on' everything (data associated) updates/refreshes immediately.
Sent from my SCH-I500 using DroidForums
...so I tried this. I charged up (was only at 85% when I got to work this morning), turned the Mobile Data off, then put my phone in standby and went in to work. I came out after 8 hours, looked at my phone and the battery was down to 19%! WTF!? On a 12 mile ride home my phone already beeped at me because of dead battery warning. This update sucks! Is there any way to go back to 2.1? At least with that my phone lasted all day... I hate Samsung, what a way to ruin a seemingly great phone... I will never buy Samsung again...